The present invention relates to a control method of a high-frequency medical device that can be used safely and conveniently by preventing a sudden temperature rise, sparks, and other skin irritation to which high frequency is applied, and the method includes a voltage generator and a high frequency voltage controller. A current / voltage detector； A high frequency generator, a high frequency controller, and a high frequency output unit； A current / voltage input unit, a microcomputer control unit, a skin contact input unit, a gel (cream) contact input unit, a sensor input unit, and a user interface unit； A current detecting unit, a skin resistance measuring unit, a gel (cream) measuring unit； A control method of a high frequency medical apparatus having a handpiece having an acceleration sensor, a gyro sensor, and a tilt sensor； When there is a high frequency output signal input from the user interface unit of the high frequency medical device, the output voltage is output only to a low voltage, and then the change in current is measured to output a set high frequency only when a change in the current is detected by a predetermined reference value. Outputting a high frequency by operating the high frequency output unit only when the movement of the handpiece satisfies a reference value based on the acceleration, the angle, and the slope input from the sensor, the gyro sensor, and the tilt sensor； If the handpiece measures the change of the output current by a certain time unit, and if there is no change in the output current, it outputs high frequency output. Reset high frequency output； When the high frequency output unit outputs a high frequency step by step from the low voltage without the risk of burn； When the flow of more than the limit current value is detected from the current sensing unit is characterized in that the high frequency output drops to a low voltage without the risk of burns.본 발명은 고주파가 가해지는 피부의 급격한 온도상승, 스파크발생, 기타 피부자극을 방지함으로써 안전하고 편리하게 사용할 수
